protected function prepareKeeper()
{
$keeper = new \StdClass();
foreach (self::$groupProperties as $propertyName => $propertyValue) {
$keeper->{$propertyName} = NULL;
}
if (!is_null(self::$groupCriteriaHigherLevel)) {
$keeperData = new KeeperData();
$keeperData->setData(self::$data);
$keeperData->setKeeper($keeper);
$keeperData->setGroupCriteria(self::$groupCriteriaHigherLevel);
$keeper = Keeper::makeGroupedKeepersArr($keeperData);
}
self::$groupKeeper = $keeper;
return NULL;
}
protected function prepareAddUpKeeper()
{
$keeper = new \StdClass();
foreach (self::$data as $item) {
foreach ($item as $key => $value) {
$keeper->{$key} = NULL;
}
break;
}
if (!is_null(self::$groupCriteria)) {
$keeperData = new KeeperData();
$keeperData->setData(self::$data);
$keeperData->setKeeper($keeper);
$keeperData->setGroupCriteria(self::$groupCriteria);
$keeper = Keeper::makeGroupedKeepersArr($keeperData);
}
self::$addUpKeeper = $keeper;
return NULL;
}